<!DOCTYPE html>
<html lang="en">

  <head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="./css/index.css">
    <title>Document</title>
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  <body>
    <h1>首页</h1>
    <hr>
    <h3>我是首页的内容</h3>
  </body>

</html>